806542 has 16 divisors (see below), whose sum is σ = 1343664. Its totient is φ = 360000.

The previous prime is 806521. The next prime is 806543. The reversal of 806542 is 245608.

806542 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (806543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1042 + ... + 1642.

It is an arithmetic number, because the mean of its divisors is an integer number (83979).

2⁸⁰⁶⁵⁴² is an apocalyptic number.

806542 is a deficient number, since it is larger than the sum of its proper divisors (537122).

806542 is a wasteful number, since it uses less digits than its factorization.

806542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 806542 is about 898.0768341295. The cubic root of 806542 is about 93.0841339845.

It can be divided in two parts, 80654 and 2, that added together give a square (80656 = 284²).

The spelling of 806542 in words is "eight hundred six thousand, five hundred forty-two".